rtp.h
/*
The oRTP library is an RTP (Realtime Transport Protocol - rfc3550) stack.
Copyright (C) 2001 Simon MORLAT simon.morlat@linphone.org
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef RTP_H
#define RTP_H
#include <ortp/port.h>
#include <ortp/str_utils.h>
#define IPMAXLEN 20
#define UDP_MAX_SIZE 1500
#define RTP_FIXED_HEADER_SIZE 12
#define RTP_DEFAULT_JITTER_TIME 80 /*miliseconds*/
#define RTP_DEFAULT_MULTICAST_TTL 5 /*hops*/
#define RTP_DEFAULT_MULTICAST_LOOPBACK 0 /*false*/
#define RTP_DEFAULT_DSCP 0x00 /*best effort*/
typedef struct rtp_header
{
#ifdef ORTP_BIGENDIAN
uint16_t version:2;
uint16_t padbit:1;
uint16_t extbit:1;
uint16_t cc:4;
uint16_t markbit:1;
uint16_t paytype:7;
#else
uint16_t cc:4;
uint16_t extbit:1;
uint16_t padbit:1;
uint16_t version:2;
uint16_t paytype:7;
uint16_t markbit:1;
#endif
uint16_t seq_number;
uint32_t timestamp;
uint32_t ssrc;
uint32_t csrc[16];
} rtp_header_t;
typedef struct rtp_stats
{
uint64_t packet_sent;
uint64_t sent; /* bytes sent */
uint64_t recv; /* bytes of payload received and delivered in time to the application */
uint64_t hw_recv; /* bytes of payload received */
uint64_t packet_recv; /* number of packets received */
uint64_t unavaillable; /* totally useless*/
uint64_t outoftime; /* number of packets that were received too late */
uint64_t cum_packet_loss; /* cumulative number of packet lost */
uint64_t bad; /* packets that did not appear to be RTP */
uint64_t discarded; /* incoming packets discarded because the queue exceeds its max size */
} rtp_stats_t;
#define RTP_TIMESTAMP_IS_NEWER_THAN(ts1,ts2) \
((uint32_t)((uint32_t)(ts1) - (uint32_t)(ts2))< (uint32_t)(1<<31))
#define RTP_TIMESTAMP_IS_STRICTLY_NEWER_THAN(ts1,ts2) \
( ((uint32_t)((uint32_t)(ts1) - (uint32_t)(ts2))< (uint32_t)(1<<31)) && (ts1)!=(ts2) )
#define TIME_IS_NEWER_THAN(t1,t2) RTP_TIMESTAMP_IS_NEWER_THAN(t1,t2)
#define TIME_IS_STRICTLY_NEWER_THAN(t1,t2) RTP_TIMESTAMP_IS_STRICTLY_NEWER_THAN(t1,t2)
#ifdef __cplusplus
extern "C"{
#endif
/* packet api */
/* the first argument is a mblk_t. The header is supposed to be not splitted */
#define rtp_set_markbit(mp,value) ((rtp_header_t*)((mp)->b_rptr))->markbit=(value)
#define rtp_set_seqnumber(mp,seq) ((rtp_header_t*)((mp)->b_rptr))->seq_number=(seq)
#define rtp_set_timestamp(mp,ts) ((rtp_header_t*)((mp)->b_rptr))->timestamp=(ts)
#define rtp_set_ssrc(mp,_ssrc) ((rtp_header_t*)((mp)->b_rptr))->ssrc=(_ssrc)
void rtp_add_csrc(mblk_t *mp ,uint32_t csrc);
#define rtp_set_payload_type(mp,pt) ((rtp_header_t*)((mp)->b_rptr))->paytype=(pt)
#define rtp_get_markbit(mp) (((rtp_header_t*)((mp)->b_rptr))->markbit)
#define rtp_get_timestamp(mp) (((rtp_header_t*)((mp)->b_rptr))->timestamp)
#define rtp_get_seqnumber(mp) (((rtp_header_t*)((mp)->b_rptr))->seq_number)
#define rtp_get_payload_type(mp) (((rtp_header_t*)((mp)->b_rptr))->paytype)
#define rtp_get_ssrc(mp) (((rtp_header_t*)((mp)->b_rptr))->ssrc)
#define rtp_get_cc(mp) (((rtp_header_t*)((mp)->b_rptr))->cc)
#define rtp_get_csrc(mp, idx) (((rtp_header_t*)((mp)->b_rptr))->csrc[idx])
int rtp_get_payload(mblk_t *packet, unsigned char **start);
#ifdef __cplusplus
}
#endif
#endif
msgb
Definition: str_utils.h:27
rtp_stats
Definition: rtp.h:63
rtp_header
Definition: rtp.h:37